The line protocol being down indicates a clocking or framing problem. Probable reasons for this are encapsulation and clock rate mismatches. Ethernet0 is administratively down, line protocol is down: This output indicates that a local interface has been manually shut down using the shutdown command.
What is total output drops on Cisco switch?
Total output drops: The number of packets dropped because the output queue is full. A common cause of this might be traffic from a high bandwidth link being switched to a lower bandwidth link or traffic from multiple inbound links being switched to a single outbound link.
What does unknown protocol mean?
CDP is a proprietary Data Link layer protocol, that if enabled, sends an announcement out the interface every 60 seconds. If the receiving end gets the CDP packet and has “no cdp enable” in the interface configuration – those announcements count as “unknown protocol drops”.
What is lost carrier?
“lost carrier” means. Number of times the carrier was lost during transmission.
What is administratively down?
Administratively down means that the interface has a shutdown command. This router now has two active interfaces with IP addresses. In other lessons, we’ll look at how it can route packets from one interface to another.
What is no shutdown command on Cisco?
#7: no shutdown The no shutdown command enables an interface (brings it up). This command must be used in interface configuration mode. It is useful for new interfaces and for troubleshooting. When you’re having trouble with an interface, you may want to try a shut and no shut.
What does no carrier signal mean?
NO CARRIER (capitalized) is a text message transmitted from a modem to its attached device (typically a computer), indicating the modem is not (or no longer) connected to a remote system. For this reason, the NO CARRIER message was ubiquitously understood to mean that one was no longer connected to a remote system.
What does conf t do?
In privileged mode, you can show anything but not make changes. Next, type config terminal (or config t) to go to global configuration mode (where the prompt looks like router(config)# ). From here, you can change global parameters.
What are these unknown protocol drops?
These unknown protocol drops should be inbound and not related to the outbound output drops that can be caused by bursts or micro bursts of traffic. 06-24-2019 06:04 AM
What is unknownunknown protocol drops in Cisco ASA?
Unknown protocol drops reports the packets with unknown or un-configured protocol on a per interface basis. Therefore it can be any protocol that the router doesn’t recognize.
What is the configuration of the switch for dropped traffic?
The switch is without any configuration at all except the following for the trunk configuration on the interface connecting to the router. There is nothing connected to the switch other than the router so the dropped traffic must be originating from the switch itself.
Why does my network drop 100s in 7 minutes?
When checked after clearing counters; some 100 drops in 7 minutes. Checked and found these may be due to DTP enabled on the LAN switch connecting to that port. Asked the customer to disable DTP on the switch. But customer confirmed that this was a Redback device and not a switch.
